1178143 has 4 divisors (see below), whose sum is σ = 1186200. Its totient is φ = 1170088.

The previous prime is 1178141. The next prime is 1178159. The reversal of 1178143 is 3418711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3418711 = 31 ⋅110281.

It is a cyclic number.

It is not a de Polignac number, because 1178143 - 2¹ = 1178141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1178141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3805 + ... + 4102.

It is an arithmetic number, because the mean of its divisors is an integer number (296550).

2^1178143 is an apocalyptic number.

1178143 is a deficient number, since it is larger than the sum of its proper divisors (8057).

1178143 is an equidigital number, since it uses as much as digits as its factorization.

1178143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8056.

The product of its digits is 672, while the sum is 25.

The square root of 1178143 is about 1085.4229590349. The cubic root of 1178143 is about 105.6167183031.

The spelling of 1178143 in words is "one million, one hundred seventy-eight thousand, one hundred forty-three".